Samsung MultiXpress K4 Series User manual

A3MonoCopier
MultiXpressK4series
SL-K4350LX/SL-K4300LX/
SL-K4250LX/SL-K4250RX
(Ver1.32)
SERVICEMANUAL
A3MonoCopier Contents
1.Precautions
2.ProductSpecicationsandDescription
3.DisassemblyandReassembly
4.Troubleshooting
5.ConnectionDiagram
6.ReferenceInformation
RefertotheservicemanualintheGSPN(seetherearcover)formoreinformation.

Contents
Contents
1.Precautions........................................................................................................................................1−1
1.1.Safetywarning..........................................................................................................................1−1
1.2.Cautionforsafety......................................................................................................................1−2
1.2.1.Toxicmaterial...............................................................................................................1−2
1.2.2.Electricshockandresafetyprecautions...........................................................................1−2
1.2.3.Handlingprecautions.....................................................................................................1−4
1.2.4.AssemblyandDisassemblyprecautions.............................................................................1−4
1.2.5.Disregardingthiswarningmaycausebodilyinjury..............................................................1−5
1.3.ESDprecautions........................................................................................................................1−6
2.ProductSpecicationsandDescription....................................................................................................2−1
2.1.ProductOverview......................................................................................................................2−1
2.2.Specications............................................................................................................................2−2
2.2.1.GeneralSpecication.....................................................................................................2−2
2.2.2.PrintSpecications........................................................................................................2−4
2.2.3.Scanspecication..........................................................................................................2−6
2.2.4.Copyspecication.........................................................................................................2−8
2.2.5.Faxspecication...........................................................................................................2−9
2.2.6.PaperHandlingspecication..........................................................................................2−11
2.2.7.SoftwareandSolutionspecication.................................................................................2−12
2.2.8.Supplies.....................................................................................................................2−14
2.2.9.MaintenanceParts.......................................................................................................2−15
2.2.10.Option.......................................................................................................................2−16
2.3.MachineExternalView.............................................................................................................2−20
2.4.FeedingSystem.......................................................................................................................2−24
2.4.1.FeedingSystemOverview.............................................................................................2−24
2.4.2.MainComponentsandfunctions....................................................................................2−25
2.4.3.Cassette.....................................................................................................................2−29
2.4.4.Pick-UpUnit..............................................................................................................2−30
2.4.5.RegistrationUnit.........................................................................................................2−31
2.4.6.MPF(Multi-PurposeFeeder)Unit...................................................................................2−32
2.5.ImageCreation........................................................................................................................2−33
2.5.1.Printingprocessoverview.............................................................................................2−33
2.5.2.ImagingUnit..............................................................................................................2−34
2.5.2.1.ImagingUnitoverview...................................................................................2−34
2.5.2.2.DrumDrive..................................................................................................2−35
2.5.2.3.DeveloperUnit.............................................................................................2−36
2.6.Fuserunit...............................................................................................................................2−38
2.6.1.FuserUnitoverview.....................................................................................................2−38
iCopyright©1995-2017SAMSUNG.Allrightsreserved.

Contents
2.6.2.Fuserunitdrive...........................................................................................................2−39
2.6.3.Fuserunittemperaturecontrol........................................................................................2−40
2.7.LaserScanningUnit(LSU)........................................................................................................2−41
2.7.1.LSUoverview.............................................................................................................2−41
2.7.2.LaserScanningOpticalpath..........................................................................................2−42
2.7.3.Lasersynchronizingdetectors........................................................................................2−43
2.8.DriveSystem..........................................................................................................................2−44
2.8.1.DriveMotors..............................................................................................................2−44
2.8.2.MainDriveUnit(OPC_DEVE_Regi_MP_Feed)...............................................................2−45
2.8.3.PickUpDrive.............................................................................................................2−48
2.8.4.DuctDrive.................................................................................................................2−49
2.8.5.Fuser/ExitDrive.........................................................................................................2−50
2.8.6.TonerSupplyDrive......................................................................................................2−51
2.9.ScannerSystem.......................................................................................................................2−52
2.9.1.ScannerSystemOverview.............................................................................................2−52
2.9.2.ScanningSystemComponents.......................................................................................2−55
2.9.3.Cautionformovingthescanner......................................................................................2−61
2.10.DualScanDocumentFeeder(DSDF)forK4350andK4300.............................................................2−62
2.10.1.DSDFoverview..........................................................................................................2−62
2.10.2.Electricalpartslocation................................................................................................2−63
2.10.3.DSDFDriveSystem....................................................................................................2−65
2.10.3.1.DSDFOriginalPick-UpAssembly...................................................................2−66
2.10.3.2.DSDFOriginalRegi.Drive.............................................................................2−67
2.10.3.3.OriginalScanningandFeed-OutDrive..............................................................2−68
2.11.ReverseAutomaticDocumentFeeder(RADF)forK4250................................................................2−69
2.11.1.RADFoverview..........................................................................................................2−69
2.11.2.Electricalpartslocation................................................................................................2−70
2.11.3.RADFDriveSystem....................................................................................................2−71
2.11.3.1.RADFOriginalPick-UpAssembly...................................................................2−72
2.11.3.2.RADFRegistration(Regi)DriveAssembly........................................................2−73
2.11.3.3.RADFFeedDriveAssembly...........................................................................2−74
2.11.3.4.RADFExitDriveAssembly............................................................................2−75
2.11.3.5.OriginalReturnDrive....................................................................................2−76
2.12.HardwareConguration............................................................................................................2−77
2.12.1.MainController(MainBoard).......................................................................................2−80
2.12.2.OPEHUBPBA...........................................................................................................2−85
2.12.3.SMPS(SwitchingModePowerSupply)board..................................................................2−86
2.12.4.FuserDriveBoard(FDB)..............................................................................................2−88
2.12.5.HVPSboard...............................................................................................................2−89
2.12.6.EraserPBA................................................................................................................2−91
Copyright©1995-2017SAMSUNG.Allrightsreserved.ii

Contents
2.12.7.FuserPBA.................................................................................................................2−91
2.12.8.WasteSensorPBA.......................................................................................................2−92
2.12.9.CRUMPBA...............................................................................................................2−92
2.12.10.TonerCRUMJointPBA..............................................................................................2−92
2.12.11.PaperSizesensorPBA.................................................................................................2−93
2.12.12.CTDPBA..................................................................................................................2−93
2.12.13.OPEUnit...................................................................................................................2−94
2.13.CassetteHeater........................................................................................................................2−95
2.14.DCFUnit...............................................................................................................................2−96
2.15.InnerFinisher........................................................................................................................2−102
3.DisassemblyandReassembly................................................................................................................3−1
3.1.Precautionswhenreplacingparts..................................................................................................3−1
3.1.1.Precautionswhenassemblinganddisassembling.................................................................3−1
3.1.2.PrecautionswhenhandlingPBA.......................................................................................3−1
3.1.3.ReleasingPlasticLatches................................................................................................3−2
3.2.Maintenance.............................................................................................................................3−3
3.2.1.MachineCleaningformaintenance...................................................................................3−3
3.2.1.1.Cleaningthescanglass.....................................................................................3−3
3.2.1.2.CleaningtheDSDFwhitebar_CIS.....................................................................3−4
3.2.1.3.Cleaningthepaperduststick.............................................................................3−5
3.2.2.Replacingthemaintenancepart........................................................................................3−7
3.2.2.1.DrumUnit.....................................................................................................3−7
3.2.2.2.Development(Deve)Unit..................................................................................3−9
3.2.2.3.FuserUnit....................................................................................................3−13
3.2.2.4.Transferroller...............................................................................................3−14
3.2.2.5.PickUp_Reverse_ForwardRoller....................................................................3−14
3.2.2.6.MPPickUp_Reverse_Forwardroller................................................................3−15
3.2.2.7.DSDFPick-uprollerAssy...............................................................................3−16
3.2.2.8.DSDFreverseroller.......................................................................................3−17
3.2.2.9.RADFpickuprollerAssy...............................................................................3−19
3.2.2.10.RADFreverserollerAssy...............................................................................3−20
3.3.ReplacingthemainSVCpart.....................................................................................................3−21
3.3.1.Leftcover..................................................................................................................3−21
3.3.2.RearCover.................................................................................................................3−21
3.3.3.LSU..........................................................................................................................3−22
3.3.4.TemperatureSensor.....................................................................................................3−22
3.3.5.HVPSboard...............................................................................................................3−23
3.3.6.OPEUnit...................................................................................................................3−24
3.3.7.Mainboard.................................................................................................................3−26
3.3.8.DeveFan...................................................................................................................3−26
iiiCopyright©1995-2017SAMSUNG.Allrightsreserved.

Contents
3.3.9.SMPSboard...............................................................................................................3−27
3.3.10.FDBboard.................................................................................................................3−28
3.3.11.Fuser_ExitDriveUnit..................................................................................................3−28
3.3.12.MainDriveUnit..........................................................................................................3−29
3.3.13.Pick-upDriveunit.......................................................................................................3−29
3.3.14.TonerDuctDriveUnit..................................................................................................3−30
3.3.15.TonerSupplyDriveUnit...............................................................................................3−30
3.3.16.TonerDuct.................................................................................................................3−31
3.3.17.WasteTonerContainersensor........................................................................................3−31
3.3.18.AutoSizeSensor.........................................................................................................3−32
3.3.19.ExitUnit....................................................................................................................3−32
3.3.20.SideUnit...................................................................................................................3−33
3.3.20.1.Fuseroutsensor............................................................................................3−34
3.3.20.2.TemperaturesensorandDuplexsensor..............................................................3−35
3.3.20.3.MPunit.......................................................................................................3−36
3.3.21.Pick-UpUnitandsensor...............................................................................................3−40
3.3.22.Feedsensor1..............................................................................................................3−41
3.3.23.FeedUnitandFeedsensor2..........................................................................................3−42
3.3.24.Registration(Regi.)Unit...............................................................................................3−43
3.3.25.DSDFUnit.................................................................................................................3−44
3.3.25.1.DSDFboard.................................................................................................3−46
3.3.25.2.DSDFmainmotor.........................................................................................3−47
3.3.25.3.DSDFpaperlengthsensor...............................................................................3−48
3.3.26.RADFUnit................................................................................................................3−50
3.3.26.1.RADFBoard................................................................................................3−51
3.3.26.2.RADFStacker..............................................................................................3−52
3.3.27.ScannerUnit(PlatenUnit).............................................................................................3−53
3.3.27.1.ScanGlass...................................................................................................3−55
3.3.27.2.LEDLampModule........................................................................................3−57
3.3.27.3.ScannerImagingUnit....................................................................................3−58
3.3.27.4.ScanJointBoard...........................................................................................3−59
3.3.27.5.APSSensor..................................................................................................3−60
3.3.28.SideCoverOpenSwitch...............................................................................................3−61
3.3.29.FrontCoverOpenSwitch..............................................................................................3−62
3.3.30.HDD.........................................................................................................................3−63
3.3.31.CardReaderorNFCKitInstallation...............................................................................3−64
3.3.31.1.InstallingtheCardReaderorNFCKitonWorkingtable(BYOD)table....................3−64
3.3.31.2.InstallingtheCardReaderorNFCKitinsideCover-ScanFront.............................3−66
3.3.32.InstallingtheWorkingtable(BYOD)table........................................................................3−69
3.3.33.DCF(DoubleCassetteFeeder).......................................................................................3−70
Copyright©1995-2017SAMSUNG.Allrightsreserved.iv

Contents
3.3.33.1.DCFmainboard...........................................................................................3−70
3.3.33.2.DCFFeedMotor...........................................................................................3−71
3.3.33.3.DCFPickUpMotor.......................................................................................3−71
3.3.34.Finisher.....................................................................................................................3−72
3.3.34.1.EntranceSensor............................................................................................3−72
3.3.34.2.EntranceMotor.............................................................................................3−74
3.3.34.3.ExitSensor..................................................................................................3−77
3.3.34.4.ExitMotor...................................................................................................3−78
3.3.34.5.SubPaddleShaftSubAssy.............................................................................3−79
3.3.34.6.FrontJoggerMotor........................................................................................3−81
3.3.34.7.FrontJoggerHomeSensor..............................................................................3−87
3.3.34.8.RearJoggerMotor.........................................................................................3−87
3.3.34.9.RearJoggerHomeSensor...............................................................................3−89
3.3.34.10.Stapler........................................................................................................3−90
3.3.34.11.TraverseHomeSensor...................................................................................3−91
3.3.34.12.TraverseMotor.............................................................................................3−94
3.3.34.13.StackerMotor...............................................................................................3−95
3.3.34.14.StackerEncoderSensor..................................................................................3−95
3.3.34.15.StackerLowerLimitSwitch............................................................................3−96
3.3.34.16.StackBeamSensor........................................................................................3−97
3.3.34.17.StackPositionSensor.....................................................................................3−98
3.3.34.18.PaperHoldingLeverSolenoid.......................................................................3−100
3.3.34.19.PaperSupportMotor....................................................................................3−102
3.3.34.20.PaperSupportHomeSensor..........................................................................3−103
3.3.34.21.EjectorMotorAssy......................................................................................3−105
3.3.34.22.MainPaddleMotor......................................................................................3−108
3.3.34.23.MainPaddleHomeSensor............................................................................3−109
3.3.34.24.MainPaddle...............................................................................................3−110
3.3.34.25.EjectorAssy................................................................................................3−111
3.3.34.26.PunchDustFullSensor................................................................................3−112
3.3.34.27.DoorSwitch...............................................................................................3−113
3.3.34.28.TopDoorSwitch.........................................................................................3−114
4.Troubleshooting..................................................................................................................................4−1
4.1.Controlpanel............................................................................................................................4−1
4.1.1.Displayscreenandusefulbuttons.....................................................................................4−2
4.1.1.1.Menunavigation.............................................................................................4−2
4.1.1.2.HomeScreenOverview....................................................................................4−3
4.1.1.3.Customizingyourhomescreen..........................................................................4−4
4.1.1.4.NoticationBar..............................................................................................4−6
4.2.UnderstandingtheLEDs.............................................................................................................4−7
vCopyright©1995-2017SAMSUNG.Allrightsreserved.

Contents
4.3.UpdatingFirmware....................................................................................................................4−8
4.3.1.UpdatingfromthePrinterControlPanel............................................................................4−8
4.3.2.UpdatingfromtheNetwork............................................................................................4−9
4.4.JAMremoval..........................................................................................................................4−12
4.4.1.Clearingoriginaldocumentjams....................................................................................4−12
4.4.2.Clearingpaperjams.....................................................................................................4−15
4.5.ServiceMode(TechMode)........................................................................................................4−20
4.5.1.EnteringtheServiceMode............................................................................................4−20
4.5.2.ServiceModeMenuTree.............................................................................................4−21
4.5.3.Information................................................................................................................4−26
4.5.3.1.General.......................................................................................................4−26
4.5.3.2.SupplyStatus...............................................................................................4−26
4.5.3.3.SoftwareVersion...........................................................................................4−27
4.5.3.4.ServiceHours...............................................................................................4−27
4.5.3.5.FaultLog.....................................................................................................4−27
4.5.3.6.PrintReports................................................................................................4−27
4.5.3.7.ExportReports..............................................................................................4−28
4.5.4.MaintenanceCounts.....................................................................................................4−29
4.5.4.1.FaultCount.................................................................................................4−29
4.5.4.2.JamCount...................................................................................................4−29
4.5.4.3.PartReplacementCount.................................................................................4−30
4.5.5.Diagnostics................................................................................................................4−31
4.5.5.1.EngineDiagnostics........................................................................................4−31
4.5.5.2.FaxDiagnostics............................................................................................4−36
4.5.5.3.ScannerDiagnostics.......................................................................................4−41
4.5.5.4.Adjustment..................................................................................................4−45
4.5.5.5.ImageManagement......................................................................................4−52
4.5.5.6.PrintTestPatterns.........................................................................................4−53
4.5.6.ServiceFunctions........................................................................................................4−54
4.5.6.1.MainMemoryClear......................................................................................4−54
4.5.6.2.HardDiskMaintenance..................................................................................4−54
4.5.6.3.CountSettingofLargePage...........................................................................4−54
4.5.6.4.NetworkPort................................................................................................4−55
4.5.6.5.DebugLog...................................................................................................4−55
4.5.6.6.CaptureLog.................................................................................................4−55
4.5.6.7.NetworkPacketCapture.................................................................................4−56
4.5.6.8.SystemRecovery..........................................................................................4−57
4.5.6.9.TRControlMode..........................................................................................4−59
4.5.6.10.ClearSystemCache.......................................................................................4−60
4.5.6.11.Hibernation..................................................................................................4−60
Copyright©1995-2017SAMSUNG.Allrightsreserved.vi

Contents
4.5.6.12.PaperLowWarningMessage...........................................................................4−60
4.5.6.13.PartReplacementAlert...................................................................................4−60
4.5.6.14.FDI............................................................................................................4−60
4.5.6.15.EIUL(EndofImageUnitLife)........................................................................4−60
4.5.6.16.SFE(SpecialFeatureEnablement)....................................................................4−61
4.5.6.17.DealerID.....................................................................................................4−62
4.5.6.18.EnvelopeRotate............................................................................................4−62
4.6.ErrorCodeandTroubleshooting.................................................................................................4−63
4.6.1.11–2Txx(Papermismatcherror)....................................................................................4−63
4.6.2.61–1111(HibernationFail)............................................................................................4−64
4.6.3.A1–xxxx(Motorerror).................................................................................................4−65
4.6.4.A2–xxxx(Fanerror)....................................................................................................4−73
4.6.5.A3–xxxx(Sensorerror)................................................................................................4−76
4.6.6.C1–xxxx(Tonercartridgeerror).....................................................................................4−80
4.6.7.C3–xxxx(Drumuniterror)............................................................................................4−84
4.6.8.C6–xxxx(Fuseruniterror)............................................................................................4−88
4.6.9.C7–xxxx(Wastetonercontainererror)............................................................................4−89
4.6.10.C8–xxxx(Developererror)............................................................................................4−91
4.6.11.C9–xxxx(Transferrollererror)......................................................................................4−92
4.6.12.H1–xxxx(Optionaltrayerror)........................................................................................4−94
4.6.13.H2–xxxx(InnerFinishererror)....................................................................................4−107
4.6.14.Mx–xxxx(Jamerror).................................................................................................4−140
4.6.15.Mx–xxxx(Traynotinstall_Paperempty_Outbinfull).......................................................4−152
4.6.16.Sx–xxxx(Systemerror)..............................................................................................4−161
4.6.17.U1–xxxx(Fusererror)................................................................................................4−173
4.6.18.U2–xxxx(LSUerror).................................................................................................4−184
4.6.19.U3–xxxx(DocumentFeedererror_DSDF).....................................................................4−187
4.7.Imagequalityproblemsandsolutions........................................................................................4−193
4.7.1.VerticalBlackLines...................................................................................................4−196
4.7.2.VerticalLightorWhiteLines.......................................................................................4−198
4.7.3.HorizontalPeriodicBlackLines,Dots...........................................................................4−200
4.7.4.HorizontalPeriodicLight/DarkLines,Dots....................................................................4−201
4.7.5.Blurredimage...........................................................................................................4−202
4.7.6.Foggyimage.............................................................................................................4−203
4.7.7.Lightimage..............................................................................................................4−204
4.7.8.Unevenpitchandjitterimage......................................................................................4−205
4.7.9.Skewedimage...........................................................................................................4−206
4.7.10.Poorfusingperformance.............................................................................................4−207
4.7.11.Stainonthepaperbackside.........................................................................................4−208
4.8.OtherErrors..........................................................................................................................4−209
viiCopyright©1995-2017SAMSUNG.Allrightsreserved.

Contents
4.8.1.Imageproblem..........................................................................................................4−209
4.8.2.Fuserproblem...........................................................................................................4−211
4.8.3.ScannerandDocumentFeederproblem.........................................................................4−212
4.8.4.Driveunitproblem....................................................................................................4−222
4.8.5.Feedingsystemproblem.............................................................................................4−223
4.8.6.LSUproblem............................................................................................................4−226
4.8.7.Softwareproblem......................................................................................................4−227
4.8.8.Electricalcircuitproblem............................................................................................4−232
4.9.AdjustingtheADF(DSDF_RADF)skew....................................................................................4−240
4.10.SPDS(SmartPrinterDiagnosticSystem)Application...................................................................4−243
4.10.1.SPDSAppInstallationandLogin.................................................................................4−244
4.10.1.1.SPDSAppInstallation.................................................................................4−244
4.10.1.2.UserRegistrationRequest.............................................................................4−245
4.10.1.3.Change_ResetPassword...............................................................................4−246
4.10.1.4.Login........................................................................................................4−247
4.10.1.5.SelectConnectMethod................................................................................4−249
4.10.1.6.Consenttocustomerinformation....................................................................4−252
4.10.2.SPDSMenuIntroduction............................................................................................4−253
4.10.2.1.ErrorMode................................................................................................4−253
4.10.2.2.DiagnosisMode..........................................................................................4−258
4.10.2.3.TestMode..................................................................................................4−259
4.10.2.4.InformationMode.......................................................................................4−260
4.10.2.5.ServiceMode.............................................................................................4−262
4.10.3.CorrectiveUpload.....................................................................................................4−267
4.10.4.Exceptions...............................................................................................................4−268
5.ConnectionDiagram............................................................................................................................5−1
5.1.ConnectionDiagram(FUSER_EXIT)............................................................................................5−2
5.2.ConnectionDiagram(PICKUP_PHDRIVE_SIDE).........................................................................5−3
5.3.ConnectionDiagram(LSU_HVPS)...............................................................................................5−4
5.4.ConnectionDiagram(Toner)........................................................................................................5−5
5.5.ConnectionDiagram(FDB_SMPS)...............................................................................................5−6
5.6.ConnectionDiagram(UI)............................................................................................................5−7
5.7.ConnectionDiagram(FRONT_OPC)............................................................................................5−8
5.8.ConnectionDiagram(Scanner).....................................................................................................5−9
5.9.ConnectionDiagram(DoubleCassetteFeeder)..............................................................................5−10
5.10.ConnectionDiagram(FAX_DUALNW_FDI)...............................................................................5−11
6.ReferenceInformation..........................................................................................................................6−1
6.1.ToolsforTroubleshooting............................................................................................................6−1
6.2.Glossary...................................................................................................................................6−3
6.3.ModelNameandCode...............................................................................................................6−9
Copyright©1995-2017SAMSUNG.Allrightsreserved.viii

Contents
6.4.DocumentRevisionList............................................................................................................6−10
ixCopyright©1995-2017SAMSUNG.Allrightsreserved.